/// <summary>
/// Gets the request token.
/// </summary>
/// <returns></returns>
public static OAuthTokenResponse GetRequestToken()
{
string callbackAddress = Config.EasyTwitterConfigHelper.GetCallBackUrl;
WebRequestBuilder builder = new WebRequestBuilder(
new Uri("https://api.twitter.com/oauth/request_token"),
HTTPVerb.POST,
new OAuthTokens());
if (!string.IsNullOrEmpty(callbackAddress))
{
builder.Parameters.Add("oauth_callback", callbackAddress);
}
string responseBody = null;
try
{
HttpWebResponse webResponse = builder.ExecuteRequest();
Stream responseStream = webResponse.GetResponseStream();
if (responseStream != null) responseBody = new StreamReader(responseStream).ReadToEnd();
}
catch (WebException wex)
{
throw new ApplicationException(wex.Message, wex);
}
return new OAuthTokenResponse
{
Token = ParseQuerystringParameter("oauth_token", responseBody),
TokenSecret = ParseQuerystringParameter("oauth_token_secret", responseBody),
VerificationString = ParseQuerystringParameter("oauth_verifier", responseBody)
};
}
/// <summary>
/// Gets the access token.
/// </summary>
/// <param name="requestToken">The request token.</param>
/// <param name="verifier">The pin number or verifier string.</param>
/// <returns></returns>
public static OAuthTokenResponse GetAccessToken(string requestToken, string verifier)
{
string denied = String.Empty;
if (String.IsNullOrEmpty(requestToken) && String.IsNullOrEmpty(verifier))
{
//this is only for web...
requestToken = System.Web.HttpContext.Current.Request.QueryString["oauth_token"] as string;
verifier = System.Web.HttpContext.Current.Request.QueryString["oauth_verifier"] as string;
denied = System.Web.HttpContext.Current.Request.QueryString["denied"] as string ?? String.Empty;
}
if (String.IsNullOrEmpty(requestToken) || String.IsNullOrEmpty(verifier))
throw new ArgumentNullException("You need to prove the request token and the verifier code");
WebRequestBuilder builder = new WebRequestBuilder(
new Uri("https://api.twitter.com/oauth/access_token"),
HTTPVerb.GET,
new OAuthTokens());
if (!string.IsNullOrEmpty(verifier))
{
builder.Parameters.Add("oauth_verifier", verifier);
}
builder.Parameters.Add("oauth_token", requestToken);
string responseBody;
try
{
if (!String.IsNullOrEmpty(denied))
throw new ApplicationException("User didn't log in ");
HttpWebResponse webResponse = builder.ExecuteRequest();
responseBody = new StreamReader(webResponse.GetResponseStream()).ReadToEnd();
}
catch (ApplicationException aex)
{
return null;
}
catch (WebException wex)
{
throw new ApplicationException(wex.Message, wex);
}
OAuthTokenResponse response = new OAuthTokenResponse();
response.Token = Regex.Match(responseBody, @"oauth_token=([^&]+)").Groups[1].Value;
response.TokenSecret = Regex.Match(responseBody, @"oauth_token_secret=([^&]+)").Groups[1].Value;
response.UserId = long.Parse(Regex.Match(responseBody, @"user_id=([^&]+)").Groups[1].Value, CultureInfo.CurrentCulture);
response.ScreenName = Regex.Match(responseBody, @"screen_name=([^&]+)").Groups[1].Value;
return response;
}
